Extending KM3NeT’s Point-Source Searches to Lower Energies with KM3NeT/ORCA

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F25%3A00389218" target="_blank" >RIV/68407700:21670/25:00389218 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.22323/1.501.1026" target="_blank" >https://doi.org/10.22323/1.501.1026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.22323/1.501.1026" target="_blank" >10.22323/1.501.1026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Extending KM3NeT’s Point-Source Searches to Lower Energies with KM3NeT/ORCA

Popis výsledku v původním jazyce

Neutrino telescopes play a key role in multi-messenger astrophysics, providing unique insights into the still-unclear processes in our Universe and its active sources. With the goal of shedding light on these mysteries, the KM3NeT collaboration is deploying a deep-sea Cherenkov neutrino telescope in the Mediterranean Sea. It comprises two detectors: identical in their design but differing by size and density. KM3NeT/ARCA, off the coast of Sicily, is optimised for high energies in the TeV-PeV range to observe astrophysical neutrinos. KM3NeT/ORCA, off the coast of Toulon (France), is designed to detect GeV–TeV atmospheric neutrinos to study oscillations and mass ordering, thereby also detecting low-energy astrophysical neutrinos and extending KM3NeT’s reach to sources at lower energies than those accessible to KM3NeT/ARCA. This contribution presents the expected performances for the detection of point-like sources using the data collected by KM3NeT/ORCA from February 2020 to September 2023. For the first time, KM3NeT/ORCA data are used to perform a binned likelihood analysis, improving KM3NeT’s sensitivity to softer spectra and enhancing the prospects for detecting neutrino sources across a wider energy range. The discovery potential and sensitivity of KM3NeT/ORCA to point sources for different spectral assumptions and over the full sky are reported. As a first application of this analysis, the direction of KM3-230213A, the ultra-high energy event recently observed by KM3NeT, is inspected, and unblinding results from the surrounding region are presented.

Název v anglickém jazyce

Extending KM3NeT’s Point-Source Searches to Lower Energies with KM3NeT/ORCA

Popis výsledku anglicky

Neutrino telescopes play a key role in multi-messenger astrophysics, providing unique insights into the still-unclear processes in our Universe and its active sources. With the goal of shedding light on these mysteries, the KM3NeT collaboration is deploying a deep-sea Cherenkov neutrino telescope in the Mediterranean Sea. It comprises two detectors: identical in their design but differing by size and density. KM3NeT/ARCA, off the coast of Sicily, is optimised for high energies in the TeV-PeV range to observe astrophysical neutrinos. KM3NeT/ORCA, off the coast of Toulon (France), is designed to detect GeV–TeV atmospheric neutrinos to study oscillations and mass ordering, thereby also detecting low-energy astrophysical neutrinos and extending KM3NeT’s reach to sources at lower energies than those accessible to KM3NeT/ARCA. This contribution presents the expected performances for the detection of point-like sources using the data collected by KM3NeT/ORCA from February 2020 to September 2023. For the first time, KM3NeT/ORCA data are used to perform a binned likelihood analysis, improving KM3NeT’s sensitivity to softer spectra and enhancing the prospects for detecting neutrino sources across a wider energy range. The discovery potential and sensitivity of KM3NeT/ORCA to point sources for different spectral assumptions and over the full sky are reported. As a first application of this analysis, the direction of KM3-230213A, the ultra-high energy event recently observed by KM3NeT, is inspected, and unblinding results from the surrounding region are presented.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/LM2023063" target="_blank" >LM2023063: Podzemní laboratoř LSM - účast České republiky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

39th International Cosmic Ray Conference (ICRC2025)

ISBN

—

ISSN

1824-8039

e-ISSN

—

Počet stran výsledku

11

Strana od-do

1-11

Název nakladatele

PoS - Proceedings of Science, Sissa Medialab srl

Místo vydání

Trieste

Místo konání akce

Geneva

Datum konání akce

14. 7. 2025

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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